翻訳と辞書 |
Canobius
''Canobius'' is an extinct genus of early ray-finned fish that lived in the Carboniferous period of Europe. ''Canobius'' was a small fish, in length. Compared with its earlier relatives, it had specialized jaw bones and hyomandibulars which attached the upper jaw to the brain case, meaning that the jaws were hung vertically under the brain case. This allowed ''Canobius'' to open its jaws wider and expand its gill slits further at the same time. In turn this meant that the fish could take in more oxygen, making it a more active creature. ''Canobius'' is presumed to have fed on plankton which it filtered from the water using its small teeth and gills. ==References==
抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)』 ■ウィキペディアで「Canobius」の詳細全文を読む
スポンサード リンク
翻訳と辞書 : 翻訳のためのインターネットリソース |
Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.
|
|